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A water fall is formed when water falls! Actually, a waterfall is formed when the water flowing from a river falls  off a cliff. The longest waterfall is Victoria falls on Zambezi river in Africa. The shortest one is in my bathroom.
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You need to convert it into ISO format . Software like PowerISO is a good option . After that you need to transfer it into your PSP or PS2 , transfered data will be now as a complete disc . Good luck...
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Any unwanted substance that causes harm to air or degrades the quality of air are called air pollutnts. Air gets polluted by industries , selfish needs of humans or by any natural calamity .